B1needed in order to achieve a particular result: He lacks the necessary skills for the job.I don't have much time so I won't be staying any longer than necessary.Just do what's necessary and then leave.If necessary, we can always change the dates of our trip.Is it necessary for all of us to be present at the meeting this afternoon?We don't want to take any more luggage with us than is strictly necessary.Essential or necessary›used in negatives and questions to show that you disapprove of something and do not think it should be used or done: I really don't think that sort of language is necessary on television.Was it really necessary for you to say that?Essential or necessary